Issue 18, 2016
From the journal:

Nanoscale

Light-stimulated carrier dynamics of CuInS2/CdS heterotetrapod nanocrystals†

Masanori Sakamoto,*ab   Koki Inoue,c   Makoto Okano,d   Masaki Saruyama,a   Sungwon Kim,e   Yeong-Gi So,f   Koji Kimoto,g   Yoshihiko Kanemitsuah  and  Toshiharu Teranishi*a  

* Corresponding authors

a Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
E-mail: sakamoto@scl.kyoto-u.ac.jp, teranisi@scl.kyoto-u.ac.jp

b PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan

c Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan

d Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan

e Department of Chemistry, Graduate School of Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

f Department of Materials Science and Engineering, Graduate School of Engineering and Resource Science, Akita University, 1-1 Tegata Gakuen-machi, Akita, Japan

g National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan

h CREST, JST, Gokasho, Uji, Kyoto 611-0011, Japan

Abstract

We synthesized a heterotetrapod composed of a chalcopyrite(ch)-CuInS2 core and wurtzite(w)-CdS arms and elucidated its optical properties and light-stimulated carrier dynamics using fs-laser flash photolysis. The CuInS2/CdS heterotetrapod possessed quasi-type II band alignment, which caused much longer-lived charge separation than that in the isolated CuInS2 nanocrystal.

Graphical abstract: Light-stimulated carrier dynamics of CuInS2/CdS heterotetrapod nanocrystals

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Article information

DOI
https://doi.org/10.1039/C6NR01097K
Article type
Communication
Submitted
06 Feb 2016
Accepted
04 Apr 2016
First published
07 Apr 2016

Nanoscale, 2016,8, 9517-9520

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Light-stimulated carrier dynamics of CuInS2/CdS heterotetrapod nanocrystals

M. Sakamoto, K. Inoue, M. Okano, M. Saruyama, S. Kim, Y. So, K. Kimoto, Y. Kanemitsu and T. Teranishi, Nanoscale, 2016, 8, 9517 DOI: 10.1039/C6NR01097K

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